50 lines
1.4 KiB
Rust
50 lines
1.4 KiB
Rust
// Copyright 2015-2019 Parity Technologies (UK) Ltd.
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// This file is part of Parity Ethereum.
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// Parity Ethereum is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity Ethereum is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity Ethereum. If not, see <http://www.gnu.org/licenses/>.
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extern crate serde_json;
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extern crate ethjson;
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use std::{fs, env, process};
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use ethjson::spec::Spec;
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fn quit(s: &str) -> ! {
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println!("{}", s);
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process::exit(1);
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}
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fn main() {
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let mut args = env::args();
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if args.len() != 2 {
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quit("You need to specify chainspec.json\n\
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\n\
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./chainspec <chainspec.json>");
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}
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let path = args.nth(1).expect("args.len() == 2; qed");
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let file = match fs::File::open(&path) {
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Ok(file) => file,
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Err(_) => quit(&format!("{} could not be opened", path)),
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};
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let spec: Result<Spec, _> = serde_json::from_reader(file);
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if let Err(err) = spec {
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quit(&format!("{} {}", path, err.to_string()));
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}
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println!("{} is valid", path);
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}
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